Johnny Dee,
i went ahead and tried this and it worked fine. might be the adapter you are using. i used an opti tri par that uses five pin i went from my cue cable to an adapter 3pmale to 5pfemale. i have full control over the unit. theoretically it makes no sense that it would control your 3 pin fixtures and not the 5 pin fixtures. the only thing we can have you do is change the adapters you are using.